检索结果-南通市图书馆

Hydrofracturing and episodic compaction of muddy rocks in sedimentary basin

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1998年第8期43卷 666-669页

作者： xinong xie Chiyun Wang Sitian Li China Univ Geosci Fac Earth Resources Wuhan 430074 Peoples R China Univ Calif Berkeley Berkeley CA 94720 USA

Hydrofracturing has been found in a numbr of sedimentary basins throughout the world, which pay an important role in the migration of hydrocarbon and compaction of deposits in overpressured impermeable muddy rock. The forming processes of hydrofracture in the basin evolution has been simulated and the associated episodic compaction of deposits has been evaluated. The modelling results indicate that episodic compacting process in impermeable rocks induced by hydrofracturing is an important way of sediment compaction.

关键词： basin modeling abnormal fluid pressure episodic compaction

Numerical Approach for Thermal History Modelling in Multi-Episodic Rifting Basins

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science 2014年第3期25卷 519-528页

作者： Bo Kang xinong xie Tao Cui Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education China University of Geosciences CSIRO Land and Water

Pre-existing models for thermal history modelling have shown deficiency in explicit algorithms to establish the quantitative relationship between maturity indices and thermal gradients in some sedimentary basins that experienced multi-episodic rifting evolution. In this study, a forward and inverse combination model（FICM） is proposed to estimate the vitrinite reflectance（Ro） and thermal gradients. The forward module is used to calculate Ro values. It couples the EASY%Ro model with burial history reconstruction with consideration of thermal gradient variations during basin evolution. The inverse module reconstructs histoical thermal gradients by calibrating cmputed Ro against measured Ro data. The time-temperature series is a necessary input for both forward and inverse modules. Sample density is a profound factor influencing the accuracy of modelling results. In order to obtain satisfying outputs, a sufficient sample density is required. Thermal gradients are assumed to vary linearly between two given samples. Modelling results of case studies indicate that the sensitivity of heating time to Ro evlution is differnt with thermal gradients depending on geolgoical setting. Three difffernt districts, which include the time-sensitive area, the temperature-sensitive area and the non-sensitive area, can be recognized on the the relationship map among Ro variations, heating time and geothermal gradients. This model can be applied to reconstruct the thermal history and maturation evolution in a basin that has undergone complex multi-episodic rifting.

关键词： thermal history maturity EASY%Ro burial history vitrinite reflectance.

Controlling factors on the submarine canyon system: A case study of the Central Canyon System in the Qiongdongnan Basin, northern South China Sea

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2014年第8期57卷 2457-2468页

作者： SU Ming ZHANG Cheng xie xinong WANG ZhenFeng JIANG Tao HE YunLong ZHANG CuiMei Laboratory of Gas Hydrate Formation Mechanism Guangzhou Institute of Energy Conversion Chinese Academy of Sciences Guangzhou Center for Gas Hydrate Research Chinese Academy of Sciences Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education China University of Geosciences China National Offshore Oil Zhanjiang Ltd. Corporation Key Laboratory of Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences

Based on an integrated analysis of high-resolution 2D/3D seismic data and drilling results, this study analyzes the tectonicsedimentary evolution of the Qiongdongnan Basin(QDNB) since the late Miocene, and discusses the controlling factors on the formation and development of the Central Canyon System(CCS). The sediment failures caused by the relative sea level falling might have discharged deposits from the slope to the canyon. The two suits of the infillings, i.e., turbidites and mass transport complex(MTC), were derived from the northwestern source and northern source, respectively. The sediment supplies, which differ significantly among different areas, might have led to the variations observed in the internal architectures. Tectonic transformation around 11.6 Ma had provided the tectonic setting for the CCS and formed an axial sub-basin in the central part of the Changchang Depression, which could be called the rudiment of the CCS. The tectonic activity of the Red River Fault(RRF) at about 5.7 Ma might have strengthened the hydrodynamics of the deposits at the junction of the Yinggehai Basin(YGHB) and the QDNB to trigger a high-energy turbidity current. The MTC from the northern continental slope system might have been constrained by the Southern Uplift, functioning as a barrier for the infillings of the CCS. Thanks to a sufficient sediment supply during the Holocene period and the paleo-seafloor morphology, the relief of modern central canyon with the starving landform in the eastern Changchang Depression might have been accentuated by deposition of sediments and vertical growth along the canyon flanks, where collapse deposits were widely developed. Corresponding to the segmentation of the CCS, the forming mechanisms of the canyon between the three segments would be different. The turbidite channel in the head area had likely been triggered by the abundant sediment supply from the northwestern source together with the fault activity at about 5.7 Ma of the RRF.

关键词：琼东南盆地海底峡谷控制因素中央系统南海北部中国海 3D地震数据

同方期刊数据库

Geochemistry of Pore Water and Associated Diagenetic Reactions in the Diapiric Area of Yinggehai Basin, Northwestern South China Sea

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science 2015年第3期26卷 306-316页

作者： Tao Jiang xinong xie Hui Chen Zhenfeng Wang Xushen Li Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education China University of Geosciences Kochi Institute for Core Sample Research Japan Agency for Marine-Earth Science and Technology China National Offshore Oil Zhanjiang Ltd. Corporation

This study examined the geochemical features of pore water in the diapiric area of the Yinggehai Basin, northwestern South China Sea, and illuminated the origin and evolution of basin fluids. Pore water with low salinity occurs in marine sediments in the diapiric area even without meteoric water infiltration. The presence of low-salinity water within deep, overpressured compartments is assumed to be due to smectite-illite transformation. Howerver, in shallow portions（less than 2 000 m） of diapiric areas with normal pressure, pore water has a much wider variation and much lower salinity than that in the overpressured intervals. Its total dissolved solid（TDS） content is ~5 336 to 35 939 mg/L. Moreover, smectite and chlorite content sharply decreases as kaolinite and illite content increase in shallower intervals. The geochemical variation of pore water in diapiric structures indicates the expulsion of low-salinity, overpressured fluids along vertical faults. Strong injection of hot fluids from deep overpressured sediments results in rapid clay mineral transformation in shallow reservoirs. Consequently, fluid mixing due to fluid expulsion from deeper overpressured deposits leads to variation in salinity and ionic composition as well as some diagenetic reactions. This includes transformation of clay minerals caused by the higher temperatur of deeper hot fluids, e.g., the transfromation of smectite to illite and chlorite to kaolinite. Therefore, variations in salinity and ionic compositions in various pressured systems provide a clue to flow pathways and associated diagenetic reactions.

关键词： pore water diagenetic reaction clay mineral transformation overpressured system Yinggehai Basin

Depositional Characteristics and Formation Mechanisms of Deep-Water Canyon Systems along the Northern South China Sea Margin

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science 2020年第4期31卷 808-819页

作者： Hui Chen xinong xie Kainan Mao Yunlong He Ming Su Wenyan Zhang School of Marine Sciences Sun Yat-sen UniversityZhuhai 519082China Southern Marine Science and Engineering Guangdong Laboratory Zhuhai 519082China Hubei Key Laboratory of Marine Geological Resources China University of GeosciencesWuhan 430074China School of Resources and Environmental Engineering Guizhou Institute of TechnologyGuiyang 550003China Institute of Coastal Research Helmholtz-Zentrum GeesthachtGeesthacht 21502Germany

Submarine canyon systems are sites for coarser clastic sediment accumulations in the deep-water domains, having the most potential for hydrocarbon reservoirs. Based on the interpretation of high resolution 2 D/3 D seismic and drilling data, depositional characteristics of three large deep-water canyon systems on the South China Sea northern margin have been analyzed. The Central Canyon System has a deep incision geomorphology extending from east to west, featured by distinct canyon segmentations, multi-provenance sediment supplies and multi-stage canyon fillings. The Pearl River Canyon System’s formation is closely related to the development of Pearl River Delta. Its vertical stacking and migrating canyon patterns have changed over time. The depositional architectures and evolution of the recent Penghu-Gaoping Canyon System respond to tectonic movements along the Taiwan-Luzon convergent continental margin. The main controlling factors of the formation and evolution of these three canyon systems include the tectonic setting, sediment supply, sea level change and paleo-geomorphology, among which the former two are dominant. The Penghu-Gaoping Canyon System formed along the subduction structural zone, directly indicating a typical tectonic origin. Numerous seismic data show that the Central Canyon and Pearl River Canyon systems are obviously affected by tectonics, associated local topography and sediment supply.

关键词： deep-water canyon system turbidite channel deep-water reservoir northern margin of South China Sea

New insights on the origin of the basement of the Xisha Uplift,South China Sea

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2017年第12期60卷 2214-2222页

作者： ZHU WeiLin xie xinong WANG ZhenFeng ZHANG DaoJun ZHANG ChengLi CAO LiCheng SHAO Lei State Key Laboratory of Marine Geology Tongji University Shanghai 200092 China Key Laboratory of Tectonics and Petroleum Resources Ministry of EducationChina University of Geoscience(Wuhan)Wuhan 430074China Zhanjiang Branch CNOOC LimitedZhanjiang 524057China Department of Geology Northwestern UniversityXi'an 710069China

The study of basement geochronology provides crucial insights into the tectonic evolution of oceans. However, early studies on the basement of the Xisha Uplift were constrained by limited geophysical and seismic data; Xiyong1 was the only commercial borehole drilled during the 1970 s because of the huge thickness of overlying Cenozoic strata on the continental margin. Utilizing two newly-acquired basement samples from borehole XK1, we present petrological analysis and zircon uranium(U)-lead(Pb) isotope dating data in this paper that enhance our understanding of the formation and tectonic features of the Xisha Uplift basement. Results indicate that this basement is composed of Late Jurassic amphibole plagiogneisses that have an average zircon 206 Pb/238 U age of 152.9±1.7 Ma. However, the youngest age of these rocks, 137±1 Ma, also suggests that metamorphism termination within the Xisha basement occurred by the Early Cretaceous. These metamorphic rocks have adamellites underneath them which were formed by magmatic intrusions during the late stage of the Early Cretaceous(107.8±3.6 Ma). Thus, in contrast to the Precambrian age(bulk rubidium(Rb)-strontium(Sr) analysis, 627 Ma) suggested by previous work on the nearby Xiyong1 borehole, zircons from XK1 are likely the product of Late Mesozoic igneous activity. Late Jurassic-Early Cretaceous regional metamorphism and granitic intrusions are not confined to Xisha; rocks have also been documented from areas including the Pearl River Mouth Basin and the Nansha Islands(Spratly Islands) and thus are likely closely related to large-scale and long-lasting subduction of the paleo-Pacific plate underneath the continental margins of East Asia, perhaps the result of closure of the Meso-Tethys in the South China Sea(SCS). Controversies remain as to whether, or not, the SCS region developed initially on a uniform Precambrian-aged metamorphic crystalline basement. It is clear, however, that by this time both Mesozoic compressive subduct

关键词： South China Sea Xisha Islands Basement Mesozoic Zircon dating

Numerical simulation on the evolution of sediment waves caused by turbidity currents

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2007年第17期52卷 2429-2434页

作者： JIANG mao xie xinong TANG SuLin ZHANG Cheng DU XueBin Faculty of Earth Resources China University of Geosciences Wuhan 430074 China Ocean Research Institute The University of Tokyo Tokyo 164-8639 Japan

Interest in the forming mechanism of sediment waves increases recently because of its significance on submarine engineering, sedimentary dynamics and hydrocarbon reservoir prediction in deep water. In this paper, the time-averaged continuity equations and Reynolds-averaged Navier-Stokes equations are applied in the numerical simulation of fluid dynamics. The modeling results are used to illuminate the effects of topography on turbidity current and explore the origin of submarine sediment waves. The research results show that (1) deposition occurs firstly at the lower ramp due to the deceleration of fluid, increase of density, loss of flow capacity and longer duration of flow passage; (2) density increase at the upslope due to the local jam results in velocity decrease and pressure increase; (3) sediment waves begin to be formed and migrated toward upstream in an area far away from the source with in- crease of the turbidity events; (4) deposition becomes more slowly with decrease of grain sizes, but the shape and sequences of these deposits are controlled by topography, not grain size.

关键词：水下沉淀物数值模拟混浊流沉积动力学

A new paleoenvironmental index for anoxic events—Mo isotopes in black shales from Upper Yangtze marine sediments

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2011年第7期54卷 1024-1033页

作者： ZHOU Lian SU Jie HUANG JunHua YAN JiaXing xie xinong GAO Shan DAI MengNing Tonger State Key Laboratory of Geological Processes and Mineral Resources China University ofGeosciences Wuhan 430074 China Key Laboratory of Biogeology and Environmental Geology of Ministry of Education China University of Geosciences Wuhan 430074 China Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education China University of Geosciences Wuhan 430074 China State Key Laboratory of Continental Dynamics Department of Geology Northwest University Xi'an 710069 China Wuxi Institute of Petroleum Geology China Petroleum & Chemical Corporation Wuxi 214151 China

This paper investigates the high-solution of Mo isotopes and uses trace-element analyses for fresh and representative black shales and siliceous shales collected from the transition between the Late Ordovician and the Early Silurian at the Wangjiawan section in Yichang and the Late Permian Dalong Formation in the Shangsi Section of Sichuan. The applicability of different geochemical parameters used as paleo-oxygenation indices are also compared. The preliminary results show that V/(V+Ni), U auth (auth U), V/Cr, Ce anom and U/Th have a scattered variation range, but most samples plot within the suboxic-anoxic fields. The suboxic-anoxic environment was dominant during the deposition and formation of the two anoxic facies. These redox indicators show little correspondence to the δ 98 Mo values. The U/Mo ratio can be used as a potential proxy for the paleo-redox conditions due to the possibility that Mo is enriched relative to U at different redox gradients during early diagenesis. This evidence is more significant for the euxinicity condition and corresponds to positive δ 98 Mo (>1.5‰) values with low U/Mo ratios. This evidence is likely related to the depositional conditions near the boundary between anoxic and euxinic environments, which are characterised by low bioturbation or water circulation. Other samples reveal a wide scatter of U/Mo ratios and δ 98 Mo <1.5‰. These results are likely due to punctuated improvements in oxygenation with intense bioturbation or water circulation, which led to the redistribution of trace element.

关键词：缺氧事件海洋沉积物环境指数黑色页岩同位素长江上游氧化还原条件地球化学参数

Sedimentary evolution of the Central Canyon System in the Qiongdongnan Basin, northern South China Sea

在线全文

学校读者我要写书评

暂无评论

Petroleum Research 2016年第1期1卷 81-92页

作者： Ming Su xinong xie Zhenfen Wang Tao Jiang Cheng Zhang Yunlong He School of Marine Sciences Sun Yat-sen UniversityGuangzhou 510275China Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes Guangzhou 510006China Key Laboratory of Gas Hydrate Chinese Academy of SciencesGuangzhou 510640China Key Laboratory of Tectonics&Petroleum Resources of Chinese Ministry of EducationChina University of GeosciencesWuhan 430074China Department of Technology of Zhanjiang BranchChina National Offshore Oil Co.LtdZhanjiang 524057China

This study elucidates sedimentary evolution history of the Central Canyon System(CCS),a large axial submarine canyon in the Qiongdongnan Basin(QDNB),northern South China *** characteristics and infill architectures of the CCS are summarized based on theanalysis of two-and three-dimensional seismic *** on a comparative analysis of the CCS indifferent segments and evolutionary stages and in consideration of the tectono-sedimentary conditionsof the QDNB four stages of the sedimentary evolution of the CCS can be divided,*** stage in the Late Miocene(11.6-5.7Ma),erosion-infilling stage in the Early Pliocene(5.7-3.7 Ma),tranquil infilling stage in the Late Pliocene(3.7-1.81 Ma),and rejuvenation stage sincethe Pleistocene(1.81 Ma to present).In the 1ate Middle Miocene(~11.6 Ma),the rudiment of CCswas developed by a regional tectonic transformation in the eastern part of the *** the EarlyPliocene,the CCS was further developed from west to east and restrained in the central depressionbelt of the basin due to abundant sediment supplies from the northwestern and northem provenances,the blocking effect of the southern uplift belt,and the restrictive geomorphological features of theeastern part of the *** the Late Pliocene,changes in the sedimentary environment resulted in thedevelopment of the CCS in the eastern part of the basin *** the Pleistocene,the joint action ofclimatic factors and geomorphological features of the eastern part of the basin led to the rejuvenationof the CCS.

关键词： Central Canyon System sedimentary evolution Late Miocene Qiongdongnan Basin northern South China Sea